20971812

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{223}}^1\times {\mathrm{461}}^1$

素因数の和:708

約数の個数: 48

約数和(自身を含む): 52157952

約数和(自身を除く): 31186140

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 204, 223, 446, 461, 669, 892, 922, 1338, 1383, 1844, 2676, 2766, 3791, 5532, 7582, 7837, 11373, 15164, 15674, 22746, 23511, 31348, 45492, 47022, 94044, 102803, 205606, 308409, 411212, 616818, 1233636, 1747651, 3495302, 5242953, 6990604, 10485906, 20971812]

約数ペア:

[(1, 20971812), (2, 10485906), (3, 6990604), (4, 5242953), (6, 3495302), (12, 1747651), (17, 1233636), (34, 616818), (51, 411212), (68, 308409), (102, 205606), (204, 102803), (223, 94044), (446, 47022), (461, 45492), (669, 31348), (892, 23511), (922, 22746), (1338, 15674), (1383, 15164), (1844, 11373), (2676, 7837), (2766, 7582), (3791, 5532)]